Put large skillet or medium sauce pan on medium-medium high heat.,Add butter and olive oil.,Dice onion and put it in the pan.,Saute for 4 minutes.,Season chicken breast with salt and pepper and dice.,Put diced chicken in the pan with the onions and saute until chicken just starts to brown.,Add box of Rice-A-Roni, reserve the flavor packet, and saute until pasta is tan.,______,Turn the heat to high and stir until the water boils.,Then put lid on and reduce heat to low.,Cook for 15-20 minutes.,Remove from heat.,Eat and enjoy!,*If the box says to wait to put the flavor packet in until later in the cooking time, do that.,(that is what the Four Cheese/Country Cheddar package recommends)